213643686346312 has 8 divisors (see below), whose sum is σ = 400581911899350. Its totient is φ = 106821843173152.

The previous prime is 213643686346303. The next prime is 213643686346333.

213643686346312 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 152847576827716 + 60796109518596 = 12363154^2 + 7797186^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13352730396637 + ... + 13352730396652.

Almost surely, 2^{213643686346312} is an apocalyptic number.

It is an amenable number.

213643686346312 is a deficient number, since it is larger than the sum of its proper divisors (186938225553038).

213643686346312 is a wasteful number, since it uses less digits than its factorization.

213643686346312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26705460793295 (or 26705460793291 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 58.

The spelling of 213643686346312 in words is "two hundred thirteen trillion, six hundred forty-three billion, six hundred eighty-six million, three hundred forty-six thousand, three hundred twelve".